Previously you could render your own scenes, but it was a bit of a pain in the ass to do. You'd be calling a function with the camera position, rotation, field of views, znear, zfar, all that shit. Pain.

So I added the SceneCamera class which holds all those things and lets you call a single function to render to a Widget, or an Image FIle, or a Texture, or the Screen.

This was a missing piece of the puzzle in the engine. It's unlocked a nice unified way to render a scene.. which means that any improvements add benefits in a bunch of different systems instead of just the main game view.